<!doctype html>
<html>
<head>
    <meta charset="utf-8">
    <title>Globe - ECHARTS-GL</title>
    <meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
    <meta name="apple-mobile-web-app-capable" content="yes"> <!-- Fullscreen Landscape on iOS -->
    <link rel="stylesheet" href="./common.css">
</head>
<body>
<div id="main"></div>
<script src="../node_modules/echarts/dist/echarts.js"></script>
<script src="../node_modules/echarts/map/js/world.js"></script>
<script src="../node_modules/echarts/map/js/china.js"></script>
<script src="../dist/echarts-gl.js"></script>
<script src="lib/jquery.min.js"></script>
<script src="js/commonUI.js"></script>
<script>
    var chart = echarts.init(document.getElementById('main'));

    var canvas = document.createElement('canvas');
    var mapChart = echarts.init(canvas, null, {
        width: 2048,
        height: 1024
    });

    mapChart.setOption({
        geo: {
            type: 'map',
            map: 'world',
            top: 0,
            left: 0,
            right: 0,
            bottom: 0,
            boundingCoords: [[-180, 90], [180, -90]],
            silent: true,
            itemStyle: {
                normal: {
                    borderColor: '#fff',
                    areaColor: 'transparent'
                }
            },
            label: {
                normal: {
                    textStyle: {
                        color: '#fff',
                        fontSize: 40
                    }
                }
            }
        }
    });

    // http://visibleearth.nasa.gov/view_cat.php?categoryID=1484
    chart.setOption({
        globe: {

            baseTexture: 'asset/world.topo.bathy.200401.jpg',
            heightTexture: 'asset/elev_bump_4k.jpg',

            displacementScale: 0.1,

            shading: 'realistic',
            realisticMaterial: {
                roughness: 0.8,
                metalness: 0
            },

            postEffect: {
                enable: true
            },
            temporalSuperSampling: {
                enable: true
            },
            light: {
                ambient: {
                    intensity: 0
                },
                main: {
                    intensity: 6,
                    shadow: true
                },
                ambientCubemap: {
                    texture: 'asset/pisa.hdr',
                    exposure: 2,
                    diffuseIntensity: 0.1,
                    specularIntensity: 1
                }
            },
            viewControl: {
                animationDurationUpdate: 1000,
                animationEasingUpdate: 'cubicInOut',
                targetCoord: [116.46, 39.92],
                autoRotate: false
            },

            layers: [{
                type: 'blend',
                blendTo: 'albedo',
                texture: mapChart
            }]
        },
        series: []
    });

    var regions = mapChart.getModel().getComponent('geo').coordinateSystem.regions;

    setInterval(function () {
        var region = regions[Math.round(Math.random() * (regions.length - 1))];
        chart.setOption({
            globe: {
                viewControl: {
                    targetCoord: region.center
                }
            }
        });
        mapChart.setOption({
            geo: {
                regions: [{
                    name: region.name,
                    label: {
                        normal: {
                            show: true
                        }
                    }
                }]
            }
        })
    }, 2000);

    window.addEventListener('resize', function () {
        chart.resize();
    });

</script>
</body>
</html>
